American Mineralogist
Open AccessLETTER
687
Onion morphology and microstructure of polyhedral serpentine
Alain Baronnet, Muriel Andréani, Olivier Grauby, Bertrand Devouard, Serge Nitsche, and Damien Chaudanson
691
Ion microprobe analysis of (231Pa)/(235U) and an appraisal of protactinium partitioning in igneous zircon
Axel K. Schmitt
695
Structural investigation of Mg local environments in silicate glasses by ultra-high field 25Mg 3QMAS NMR spectroscopy
Keiji Shimoda, Yasuhiro Tobu, Moriaki Hatakeyama, Takahiro Nemoto, and Koji Saito
699
Entropies of mixing and subsolidus phase relations of forsterite–fayalite (Mg2SiO4–Fe2SiO4) solid solution
Edgar Dachs and Charles A. Geiger
REGULAR ARTICLE
453
New constraints on metamorphic history of Adirondack diopsides (New York, U.S.A.): Al and δ18O profiles
G. Desbois, J. Ingrin, N.T. Kita, J.W. Valley, and E. Deloule
460
Hammadah al Hamra 193: the first amphibole-bearing winonaite
Christine Floss, Bradley L. Jolliff, Gretchen K. Benedix, Frank J. Stadermann, and Jay Reid
468
Crystal chemistry of trioctahedral micas in alkaline and subalkaline volcanic rocks: A case study from Mt. Sassetto (Tolfa district, Latium, central Italy)
Angela Laurora, Maria Franca Brigatti, Annibale Mottana, Daniele Malferrari, and Enrico Caprilli
481
Magnetic excitations and heat capacity of fayalite, Fe2SiO4
M.C. Aronson, L. Stixrude, M.K. Davis, W. Gannon, and K. Ahilan
491
The barometer tremolite + tschermakite + 2 albite = 2 pargasite + 8 quartz: Constraints from experimental data at unit silica activity, with application to garnet-free natural assemblages
Subhadip Bhadra and Abhijit Bhattacharya
503
In-situ measurement of dissolution of anorthite in Na-Cl-OH solutions at 22 °C using phase-shift interferometry
Hisao Satoh, Yoshihiro Nishimura, Katsuo Tsukamoto, Akira Ueda, Koichi Kato, and Shinzo Ueta
510
Experimental investigation of the breakdown of dolomite in rock cores at 100 MPa, 650–750 °C
Michael T. DeAngelis, Theodore C. Labotka, David R. Cole, Mostafa Fayek, and Lawrence M. Anovitz
518
Dissolution of the (001) surface of galena: An in situ assessment of surface speciation by Fluid-cell micro-Raman spectroscopy
Giovanni De Giudici, Piercarlo Ricci, Pierfranco Lattanzi, and Alberto Anedda
525
An infrared spectroscopic study of the OH stretching frequencies of talc and 10-Ã… phase to 10 GPa
Stephen A. Parry, Alison R. Pawley, Ray L. Jones, and Simon M. Clark
532
Co2+-Cu2+ substitution in bieberite solid-solution series, (Co1—xCux)SO4·7H2O, 0.00 ≤ x ≤ 0.46: Synthesis, single-crystal structure analysis, and optical spectroscopy
GŸnther J. Redhammer, Lisa Koll, Manfred Bernroider, Gerold Tippelt, Georg Amthauer, and Georg Roth
546
Clinoenstatite exsolution in diopsidic augite of Dabieshan: Garnet peridotite from depth of 300 km
Xiang-Wen Liu, Zhen-Min Jin, and Harry W. Green II
553
Heat-pulse calorimetry measurements on natural chlorite-group minerals
C. Bertoldi, E. Dachs, and P. Appel
560
Low-temperature behavior of NaGaSi2O6
F. Nestola, N. Rotiroti, M. Bruno, M. Tribaudino, S. van Smaalen, H. Ohashi, and G.J. Redhammer
570
Single-crystal elasticity of zoisite Ca2Al3Si3O12(OH) by Brillouin scattering
Zhu Mao, Fuming Jiang, and Thomas S. Duffy
577
The effect of valence state and site geometry on Ti L3,2 and O K electron energy-loss spectra of TixOy phases
E. Stoyanov, F. Langenhorst, and G. Steinle-Neumann
587
Characterization of defects and the local structure in natural and synthetic alunite (K,Na,H3O)Al3(SO4)2(OH)6 by multi-nuclear solid-state NMR spectroscopy
Ulla Gro Nielsen, Juraj Majzlan, Brian Phillips, Martine Ziliox, and Clare P. Grey
598
Using a mineral lifetime diagram to evaluate the persistence of olivine on Mars
Amanda Albright Olsen and J. Donald Rimstidt
603
Complexity in 15- and 30-sectors polygonal serpentine: Longitudinal sections, intrasector stacking faults and XRPD satellites
E. Mugnaioli, M. Logar, M. Mellini, and C. Viti
617
Light-induced alteration of arsenic sulfides: A new product with an orthorhombic crystal structure
Luca Bindi and Paola Bonazzi
621
Transmission electron microscopy study of magnetites in a freshwater population of magnetotactic bacteria
A. Isambert, N. Menguy, E. Larquet, F. Guyot, and J.-P. Valet
631
Anomalous behavior at the I2/a to Imab phase transition in SiO2-moganite: An analysis using hard-mode Raman spectroscopy
Peter J. Heaney, David A. McKeown, and Jeffrey E. Post
640
The system Ag-Au-Se: Phase relations below 405 K and determination of standard thermodynamic properties of selenides by solid-state galvanic cell technique
Evgeniy G. Osadchii and Ekaterina A. Echmaeva
648
Rhombohedral (9R) and hexagonal (6H) perovskites in barium silicates under high pressure
Hitoshi Yusa, Nagayoshi Sata, and Yasuo Ohishi
655
Structural effects of pressure on monoclinic chlorite: A single-crystal study
P.F. Zanazzi, M. Montagnoli, S. Nazzareni, and P. Comodi
662
Neptunium incorporation in sodium-substituted metaschoepite
Amanda L. Klingensmith, Kathryn M. Deely, William S. Kinman, Virginia Kelly, and Peter C. Burns
670
The effect of H2O on olivine crystallization in MORB: Experimental calibration at 200 MPa
Renat R. Almeev, François Holtz, Jürgen Koepke, Fleurice Parat, and Roman E. Botcharnikov
675
Symmetry and crystal structure of biaxial elbaite-liddicoatite tourmaline from the Transbaikalia region, Russia
Alexander Shtukenberg, Ira Rozhdestvenskaya, Olga Frank-Kamenetskaya, Julia Bronzova, Harald Euler, Armin Kirfel, Irina Bannova, and Anatoly Zolotarev
NEW MINERAL NAMES
703
NEW MINERAL NAMES
Paula C. Piilonen, Andrew J. Locock, Ralph Rowe, and T. Scott Ercit
MEMORIAL
708
Memorial of Werner Schreyer, 1930-2006
Friedrich A. Seifert and Walter V. Maresch
BOOK REVIEW
711
BOOK REVIEW: MESOZOIC TO CENOZOIC ALKALINE MAGMATISM IN THE BRAZILIAN PLATFORM edited by P. Comin-Chiaramonti and C. de Barros Gomes. (2005) Edusp, San Paolo, Brazil (www.edusp.com.br). ISBN 85-314-0903-9. 750 pages.
D. Ken Bailey
DEPOSIT ITEMS
468
Crystal chemistry of trioctahedral micas in alkaline and subalkaline volcanic rocks: A case study from Mt. Sassetto (Tolfa district, Latium, central Italy)
Angela Laurora, Maria Franca Brigatti, Annibale Mottana, Daniele Malferrari, and Enrico Caprilli
Item#: AM-07-015
Table 9 Refined and calculated site occupancies of Mt. Sassetto mica crystals used in single-crystal X-ray diffraction study.
AM-07-015.zip zipped
Table 9 Refined and calculated site occupancies of Mt. Sassetto mica crystals used in single-crystal X-ray diffraction study.
AM-07-015.zip zipped
491
The barometer tremolite + tschermakite + 2 albite = 2 pargasite + 8 quartz: Constraints from experimental data at unit silica activity, with application to garnet-free natural assemblages
Subhadip Bhadra and Abhijit Bhattacharya
Item#: AM-07-012
Table 4 Summary of experimental conditions. Table 8 Comparison between the experimental P values (Pexp) and pressures (Pcom) computed from the barometric Equations (xv) and (xvi)
Table 4 Summary of experimental conditions. Table 8 Comparison between the experimental P values (Pexp) and pressures (Pcom) computed from the barometric Equations (xv) and (xvi)
Table 9 A comparison of P values in natural assemblage retrieved using the proposed barometers (Pcom) with those recommended by the respective authors (Pnat). Appendix 1 Precision Of The Proposed Barometer. Appendix 2 Scheme For Calculating Pressure Using Coexisting Hornblende And Plagioclase In Sample 73-20c Of Spear (1982)
AM-07-012.zip zipped
532
Co2+-Cu2+ substitution in bieberite solid-solution series, (Co1—xCux)SO4·7H2O, 0.00 ≤ x ≤ 0.46: Synthesis, single-crystal structure analysis, and optical spectroscopy
GŸnther J. Redhammer, Lisa Koll, Manfred Bernroider, Gerold Tippelt, Georg Amthauer, and Georg Roth
Item#: AM-07-014
Table 2b. Data collection parameters and results of structure refinement for (Co1ÐxCux)SO4á5H2O
AM-07-014.zip zipped
Table 2b. Data collection parameters and results of structure refinement for (Co1ÐxCux)SO4á5H2O
AM-07-014.zip zipped
546
Clinoenstatite exsolution in diopsidic augite of Dabieshan: Garnet peridotite from depth of 300 km
Xiang-Wen Liu, Zhen-Min Jin, and Harry W. Green II
553
Heat-pulse calorimetry measurements on natural chlorite-group minerals
C. Bertoldi, E. Dachs, and P. Appel
621
Transmission electron microscopy study of magnetites in a freshwater population of magnetotactic bacteria
A. Isambert, N. Menguy, E. Larquet, F. Guyot, and J.-P. Valet
Item#: AM-07-010
Appendix. The shape factors, describing the elongation of the crystals, were calculated from their width to length ratio, so thatÊw/lʲ 1. The results are presented using histograms.
AM-07-010.zip zipped
Appendix. The shape factors, describing the elongation of the crystals, were calculated from their width to length ratio, so thatÊw/lʲ 1. The results are presented using histograms.
AM-07-010.zip zipped
655
Structural effects of pressure on monoclinic chlorite: A single-crystal study
P.F. Zanazzi, M. Montagnoli, S. Nazzareni, and P. Comodi
662
Neptunium incorporation in sodium-substituted metaschoepite
Amanda L. Klingensmith, Kathryn M. Deely, William S. Kinman, Virginia Kelly, and Peter C. Burns
670
The effect of H2O on olivine crystallization in MORB: Experimental calibration at 200 MPa
Renat R. Almeev, François Holtz, Jürgen Koepke, Fleurice Parat, and Roman E. Botcharnikov
Item#: AM-07-013
Appendix Table 1. Experimental conditions and products (entire dataset)
AM-07-013.zip zipped
Appendix Table 1. Experimental conditions and products (entire dataset)
AM-07-013.zip zipped
699
Entropies of mixing and subsolidus phase relations of forsterite–fayalite (Mg2SiO4–Fe2SiO4) solid solution
Edgar Dachs and Charles A. Geiger
Item#: AM-07-016
Figure 3. Calorimetric excess entropies at 298.15 K, _Sxs298.15, as function of composition for Fe-Mg olivines.
AM-07-016.zip zipped
Figure 3. Calorimetric excess entropies at 298.15 K, _Sxs298.15, as function of composition for Fe-Mg olivines.
AM-07-016.zip zipped
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SPECIAL COLLECTIONS
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American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.